[PATCH 0/2] qemu: support shmem device migration

[Wang Xin]

Shmem device support property role with 'master'(master=on) or
'peer'(master=off, default mode), which controls to copy the
shared memory on migration to the destination host or not. see
https://git.qemu.org/?p=qemu.git;a=blob_plain;f=docs/system/ivshmem.rst;hb=HEAD


The 1st patch add attribute 'role', it based on Martin's old patch
https://www.redhat.com/archives/libvir-list/2016-September/msg00536.html

The 2nd patch remove shmem name check in migraiton, which
allows user change shared memory path on destination host.

v3 -> v2:
  1. Correct description of shmem ‘role’ attribute. If there is any
     mistake in the description, please show me. Sorry for my poor
     English :)
  2. Remove the inappropriate suggestion in migration log.
  3. allow shmem name change in migration, instead add a new
     'mem-path' attribute.

v2 -> v1:
  Fix ivshmem testcases failure.


Wang Xin (2):
  qemu: add support for shmem-{plain, doorbell} role
  conf: allow shmem name change in migration

 docs/formatdomain.html.in                     | 13 ++++++-
 docs/schemas/domaincommon.rng                 |  8 ++++
 src/conf/domain_conf.c                        | 37 +++++++++++++++++--
 src/conf/domain_conf.h                        | 10 +++++
 src/libvirt_private.syms                      |  2 +
 src/qemu/qemu_command.c                       | 17 ++++++++-
 src/qemu/qemu_migration.c                     | 20 ++++++++--
 .../qemuhotplug-ivshmem-plain-detach.xml      |  2 +-
 .../qemuhotplug-ivshmem-plain.xml             |  2 +-
 ...qemuhotplug-base-live+ivshmem-doorbell.xml |  2 +-
 .../qemuhotplug-base-live+ivshmem-plain.xml   |  2 +-
 .../shmem-plain-doorbell.args                 |  6 ++-
 .../qemuxml2argvdata/shmem-plain-doorbell.xml |  4 +-
 .../shmem-plain-doorbell.xml                  |  4 +-
 tests/qemuxml2xmltest.c                       |  3 +-
 15 files changed, 110 insertions(+), 22 deletions(-)

-- 
2.23.0